John L Maddox, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

211906 Issued in MA

Practice address

500 Salem St
Wilmington, MA 01887-1200

Phone

(978) 988-6209

Fax

(978) 988-6139

NPI assigned

Nov 3, 2005

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Pediatric Medicine

Education

University of New Mexico School of Medicine, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mass General Brigham Medical Group Northern Massachusetts IncGroup PAC ID 3577467224, 817 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: maddox.john.pma@direct.partners.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Mass General Brigham Medical Group Northern Massachusetts Inc

  • Emergency Medicine Physician
  • Salem, MA
  • NPI 1588606123

  Pediatrics

  Medicare reassignment Care Compare group NPD
• Mass General Brigham Community Physicians Inc.

  • Internal Medicine Physician
  • Haverhill, MA
  • NPI 1891112637

  Pediatrics

  Medicare reassignment NPD
• Mass General Brigham Community Physicians Inc

  • Cardiovascular Disease Physician
  • Medford, MA
  • NPI 1548638265
  NPD
• Pentucket Medical Associates, LLC

  • Internal Medicine Physician
  • Haverhill, MA
  • NPI 1609872886

  Pediatrics

  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1130976000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1801887229",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "122 LAKEVIEW AVE",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018302716",
            "telephone_number": "978-988-6209",
            "fax_number": "978-988-6139"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 SALEM ST",
            "city": "WILMINGTON",
            "state": "MA",
            "postal_code": "018871200",
            "telephone_number": "978-988-6209",
            "fax_number": "978-988-6139"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MADDOX",
        "first_name": "JOHN",
        "middle_name": "L",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-03",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "211906",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0149110",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Brian James Macdonald, PT
• Kiara Macero
• Valerie Selfridge Mackenzie, LICSW
• Mark A Macklis, M.D.
• Amy Elizabeth Maddaleni, DPT
• Patricia Marie Magee, RPH
• Bethanne Magnuson, OTR/L
• Alyssa Ann Maiuri-Mombeleur, PSYD
• Faisal Malik, MD
• Maribeth Crupi Physical Therpay LLC

• Pediatrics Physician in Wilmington, MA
• Providers in Wilmington, MA by specialty
• Pediatrics Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.